Programmable electronic start-up delay for refrigeration units
AssigneeSPX Corporation
InventorBryan M. Elwood
Life of this patent
Estimating the term…
Abstract
A programmable electronic start-up delay for delaying the start-up of refrigeration units (10, 12, 14) for a user-programmable variable delay period. The delay permits a group of refrigeration units all powered by the same source (16) to be restarted at different time intervals after a power failure to prevent overloading of the power source or associated circuitry.
Claims11
A method of controlling start-up of an electrically powered device, the method comprising the steps of:
- (a) receiving a delay value in an electrical signal from an input device and storing the delay value;
- (b) detecting a disruption of power delivery to the electrically powered device;
- (b) detecting a resumption of power delivery;
- (c) measuring a period of time following resumption of power delivery, the length of the period of time being determined by the delay value;
- and
- (d) preventing start-up of the electrically powered device until after the period of time has been measured following the resumption of power delivery.
A variable delay restart apparatus for regulating the start-up of an electrically powered device following an interruption in power delivery to the electrically powered device, the apparatus comprising:
- a controller operable to receive and store input which will determine the length of a delay period, sense a disruption of power delivery, sense a resumption of power delivery, measure the delay period, and initiate a restart of the electrically powered device;
- and
- an input device operable to provide input in the form of an electrical signal to the controller.
A method of controlling start-up of an electrically powered device, the method comprising the steps of:
- (a) detecting a disruption of power delivery to the electrically powered device;
- (b) detecting a resumption of power delivery;
- (c) measuring a predetermined period of time following resumption of power delivery;
- and
- (d) preventing start-up of the electrically powered device until after the period of time has been measured following the resumption of power delivery;
- and
- (e) communicating both visually and audibly information regarding the operation of the variable delay restart apparatus and the powered device.
A variable delay restart apparatus for regulating the start-up of an electrically powered device following an interruption in power delivery to the electrically powered device, the apparatus comprising:
- a controller operable to receive and store input which will determine the length of a delay period, sense an interruption in power delivery, measure the delay period, and initiate a restart of the powered device;
- and
- an interface operable to communicate both visually and audibly information regarding the operation of the variable delay restart apparatus and the powered device.
Dependencies are inferred from the claim text.